Chapter 14 integration of Nervous System

Chapter 14 integration of Nervous System - Autonomic...

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Autonomic Nervous System The autonomic nervous system is the part of the peripheral nervous system that functions independently and continuously, w/o conscious effort. This system controls visceral activities by regulating the actions of smooth muscles, cardiac muscles, and various glands. It oversees heart rate, blood pressure, breathing rate, body temperature, and other visceral activities that aid in maintaining homeostasis.
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General Characteristics of ANS The ANS includes two divisions, called the sympathetic and parasympathetic divisions, that interact. For ex., many organs have nerve fibers from each of the divisions. Impulses on one set of fibers may activate an organ, whereas impulses on the other set inhibit it. Thus, the divisions may function antagonistically , regulating the actions of some organs by alternately activating or inhibiting them.
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The function of the autonomic divisions are varied; that is, each activates some organs and inhibits others. This reveals that the divisions
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This note was uploaded on 04/17/2008 for the course BIO 146 taught by Professor Fishback during the Spring '08 term at Ozarks Tech.

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Chapter 14 integration of Nervous System - Autonomic...

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